Hell, making tackles and stopping big plays (gains of 20+ yards) is just the same as getting a FF,FR or INT. It is part of the game. The Texans "other" LBs have lacked fundamentals....if Greenwood can get the job done w/o the flash (i.e. tackle) then I'm all over that.
Hell, Matt Stevens would of needed a 15 INT season to compensate for all of his missed tackles! Too many people only care about the "flashy" play, HomeRuns & TOs, but the real playmakers make the "simple" plays!
If the only tool you have is a hammer, every problem looks like a nail.